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If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease."Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony CalfoFishless CycleCycling with FishMarine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]

From what I have read, gold nuggets also like the odd meaty foods as well. You might want to try offering some blood worms once in a while as well

If you take your time to do the research FIRST, you can successfully set-up and keep ANY type of aquarium with ease."Not using a quarantine tank is like playing Russian roulette. Nobody wins the game, some people just get to play longer than others." - Anthony CalfoFishless CycleCycling with FishMarine Aquarium Info [URL="http://saltwater.aquaticcommunity.com/"]

I am far from a pleco expert, but in my opinion it just looks like any juvenile bristlenose I have seen in a fish store before. the white rim should fade with age.
Of course I have never seen a gold nugget fry before so there always is a possibility you got yourself more than you bargained for...

Juvenile BN if ever I have seen one. I am currently raising 5 of them the now and he looks identical to them. Remember often juvenile fish have extra markings to help them camouflage themselves to hide from predators.